64327805 has 8 divisors (see below), whose sum is σ = 77526072. Its totient is φ = 51240448.

The previous prime is 64327799. The next prime is 64327841. The reversal of 64327805 is 50872346.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3892729 + 60435076 = 1973^2 + 7774^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64327805 - 2²⁴ = 47550589 is a prime.

It is a super-2 number, since 2×64327805² = 8276132992236050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26444 + ... + 28773.

It is an arithmetic number, because the mean of its divisors is an integer number (9690759).

Almost surely, 2^64327805 is an apocalyptic number.

It is an amenable number.

64327805 is a deficient number, since it is larger than the sum of its proper divisors (13198267).

64327805 is a wasteful number, since it uses less digits than its factorization.

64327805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55455.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 64327805 is about 8020.4616450676. The cubic root of 64327805 is about 400.6817644164.

The spelling of 64327805 in words is "sixty-four million, three hundred twenty-seven thousand, eight hundred five".